WO2011150555A1 - Procédé, système et dispositif de réseau pour équilibrage de charge entre nœuds de réseau - Google Patents

Procédé, système et dispositif de réseau pour équilibrage de charge entre nœuds de réseau Download PDF

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Publication number
WO2011150555A1
WO2011150555A1 PCT/CN2010/073448 CN2010073448W WO2011150555A1 WO 2011150555 A1 WO2011150555 A1 WO 2011150555A1 CN 2010073448 W CN2010073448 W CN 2010073448W WO 2011150555 A1 WO2011150555 A1 WO 2011150555A1
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WO
WIPO (PCT)
Prior art keywords
load
sharing
node
network
neighboring
Prior art date
Application number
PCT/CN2010/073448
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English (en)
Chinese (zh)
Inventor
刘霖
王继承
程翔
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to PCT/CN2010/073448 priority Critical patent/WO2011150555A1/fr
Publication of WO2011150555A1 publication Critical patent/WO2011150555A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/086—Load balancing or load distribution among access entities
    • H04W28/0861—Load balancing or load distribution among access entities between base stations

Definitions

  • a UMTS (Universal Mobile Telecommunications System) system is a third-generation mobile communication system using WCDMA (Wideband Code Division Multiple Access) technology, and therefore UMTS is usually also adopted.
  • the system is called a WCDMA system.
  • the UMTS system uses a similar structure to the second generation mobile communication system, including RAN (Radio Access Network) and CN (Core Network).
  • the wireless access network handles all wireless-related functions.
  • the core network handles all voice calls and data connections in the UMTS system and implements switching and routing functions with external networks.
  • the CN is logically divided into a CS domain (circuit switched domain) and a PS domain (Packet Switched Domain) against UTRAN (Universal Terrestrial Radio Access Network), CN and UE ( User Equipment, User Equipment) constitutes the entire UMTS system.
  • Figure 1 is a structural diagram of UTRAN in the prior art, the UTRAN contains one or more RNS (Radio Network Subsystem); one RNS is controlled by one RNC (Radio Network Controller (Radio Network Controller) and one or more NodeBs (Nodes, ie, base stations).
  • the interface between the RNC and the CN is the Iu interface.
  • the NodeB and the RNC are connected through the Iub interface, and the RNCs are connected through the lur interface.
  • the lur interface can be connected through a direct physical connection between the RNCs or through a transport network.
  • the RNC allocates and controls the radio resources of the associated NodeB and the associated NodeB.
  • the NodeB performs data flow conversion between the Iub interface and the Uu interface, and also performs wireless Resource Management.
  • RNC is used to control the UTRAN radio resources, mainly to complete RRC (Radio Resource
  • Radio resource control Connection establishment and release, handover, macro-level merging, radio resource management, etc., as follows:
  • Radio resource management and control functions such as macro diversity combining, power control, and radio bearer allocation.
  • HSPA High Speed Packet Access
  • the data throughput rate is getting higher and higher, and the capacity demand for RNC is getting higher and higher, especially HSPA+ (Evolved High Speed Packet Access, evolved).
  • HSPA+ Evolved High Speed Packet Access, evolved.
  • the capacity of the RNC is higher, and the capacity of the RNC is also getting larger.
  • Due to the natural distribution and mobility of users, the RNC accessed by the UE has a large randomness, which may cause some RNCs to operate at a high load in a short period of time. This will inevitably affect the efficiency of the RNC and the data rate of the user, and dynamically consider the inter-RNC.
  • Load sharing is becoming more and more important.
  • load balancing and load sharing between RNCs are based on the premise that all RNCs can share resources.
  • the RNC defaults and its neighboring RNCs provide resource sharing unconditionally.
  • the RNC is overloaded, the user is migrated to other adjacent RNCs.
  • RNC does not provide resource sharing for some reason, so that RNC unknowingly migrating users to RNCs that do not support resource sharing will cause failure.
  • an effective solution has not been proposed yet.
  • a primary object of the present invention is to provide a method, system and network device for load sharing between network nodes to solve at least the above problems.
  • a method for load sharing between network nodes including: receiving, by a network node, load information of a neighboring node, where the load information includes whether neighboring nodes allow resource sharing; when the network node is overloaded According to the saved information, select adjacent nodes that support resource sharing for load sharing.
  • a network device including: a saving module, configured to receive and save load information of a neighboring node, where the load information includes whether a neighboring node allows resource sharing; and a load sharing module, configured to: When the load is overloaded, the neighboring nodes that support resource sharing are selected according to the saved information for load sharing.
  • a system for load sharing between network nodes including a network node and a plurality of neighboring nodes of a network node, the neighboring node is configured to send load information to the network node, where the load information includes adjacent Whether the node allows resource sharing; the network node includes: a saving module, configured to receive and save load information; and a load sharing module, when used for load overload, selects adjacent nodes that support resource sharing according to the saved information to perform load sharing.
  • FIG. 2 is a flowchart of a method for load sharing between network nodes according to Embodiment 1 of the present invention
  • FIG. 3 is an inter-RNC pass according to Embodiment 2 of the present invention
  • FIG. 4 is a flowchart of exchanging load information between load information messages between eNodeBs according to Embodiment 3 of the present invention
  • FIG. 5 is a core network exchange between RNCs according to Embodiment 4 of the present invention.
  • FIG. 6 is a flowchart of a method for load sharing between network nodes according to Embodiment 5 of the present invention
  • FIG. 7 is a structural block diagram of a network device according to Embodiment 6 of the present invention
  • FIG. 8 is an implementation of the present invention.
  • Example 7 is a system block diagram of load sharing between network nodes.
  • the radio access network includes a plurality of network nodes, for example: In a UMTS system, a plurality of radio network controllers RNC are included, and RNCs are connected through an Iu interface or an Iur interface; in an LTE system, a plurality of evolved Node Bs (eNodeBs) are included. ).
  • the connection relationship between the network nodes follows the relevant communication protocol.
  • FIG. 2 is a flowchart of a method for load sharing between network nodes according to an embodiment of the present invention.
  • the method includes: Step S202: A network node receives and stores load information of a neighboring node, where the load information includes neighboring Whether the node allows resource sharing; the neighboring node may send the load information by one of the following messages: a public measurement 4 report message, a load information message, a relocation request message, or a relocation request confirmation message.
  • the neighboring nodes that support resource sharing are selected according to the saved information to perform load sharing.
  • the load information sent by the neighboring nodes is usually in units of cells.
  • the load information provided by the neighboring nodes further includes: load information at the network element level, that is, Transmission resources, processor load conditions, etc. may be in units of RNC.
  • the neighboring node that supports resource sharing may be selected first; the load information according to the network element level (for example, the load information of the network element level and the load information of the cell level) is selected.
  • the neighboring nodes whose resources are shared are selected by the adjacent nodes whose load is less than the threshold to perform load sharing.
  • the foregoing load information may further include: load information of whether the adjacent node is allowed to be moved back; at this time, when the network node performs load sharing, the neighboring node that supports resource sharing may be selected first; Among the adjacent nodes sharing resources, the neighboring nodes that allow the fetching are selected for load sharing. In this case, when the load of the network node returns to normal, the network node and the adjacent node that performs load sharing can perform load fetching, and the user who migrates to the adjacent node is migrated back.
  • the foregoing load information may include: whether the neighboring node allows resource sharing, load information at the network element level, load information of whether the adjacent node is allowed to be moved back, and load information in the related art.
  • the network node can comprehensively consider this information for load sharing.
  • the network node in the related art cannot know whether the neighboring node allows resource sharing.
  • the network element or field
  • the neighboring nodes can provide the resources for sharing, and provide a reliable basis for the load sharing.
  • the network node in this embodiment performs load sharing, it is resolved whether the neighboring nodes provide resources by considering whether neighboring nodes allow resource sharing. The problem of load sharing failure is shared, and the effect of load balancing is reasonably achieved.
  • Embodiment 2 This embodiment describes the load information exchange between RNCs in the UMTS system as an example, where the RNC passes the public measurement.
  • the process of exchanging load information is as shown in FIG. 3: Step S302: The RNC1 initiates a public measurement report initiation request message to the RNC2, requesting the RNC2 to perform some common measurement. Step S304, after the RNC2 is ready to be completed, returning the public measurement to the RNC1.
  • step S306 After the RNC2 reaches the measurement reporting condition, the RNC1 sends a common measurement report message to the RNC1, where the corresponding measurement information is carried, for example, including RNC-level load information, and whether resource sharing is allowed and/or whether the migration load is allowed;
  • RNC1 After receiving the public measurement report of RNC2, RNC1 can obtain the load status of RNC2, and whether the RNC2 allows resource sharing and whether the load of the return load is allowed.
  • the RNC exchanges load information through a common measurement report, and the method is simple, and no new signaling is added, so that reliable data is provided for load sharing.
  • Embodiment 3 This embodiment uses the load information exchange between the eNodeBs in the LTE system as an example. The flow of the load information is exchanged between the eNodeBs through the load information message, as shown in FIG. 4: Step S402, the eNodeB2 sends the information to the eNodeB1.
  • Load information message where the load information of the eNodeB level, and whether resource sharing is allowed and/or whether the backhaul load is allowed;
  • the eNodeB1 can obtain the load status of the eNodeB2, and whether the eNodeB2 allows resource sharing and whether the backhaul load information is allowed.
  • the eNodeB exchanges load information through the load information message, and the method is simple, and no new signaling is added, so that reliable data is provided for load sharing.
  • Embodiment 4 This embodiment is described by taking the load information of the core network between the RNCs in the UMTS system as an example. The process of exchanging load information is as shown in FIG.
  • Step S501 The UE measures 4 reports on the RNC 1; Step S502, the RNC1 decides to initiate the inter-RNC handover according to the measurement of the UE, and initiates an SRNC relocation to the RNC2.
  • step S503 the RNC1 initiates a relocation request message to the CN, requesting to initiate relocation to the RNC2.
  • the message also carries the RNC-level load information of the RNC1, and whether the resource sharing and/or the relocation load is allowed, and the like.
  • step S504 the CN sends a relocation request message to the RNC2, where the load information of the RNC 1 is carried, including the RNC1.
  • step S505 the RNC2 returns a relocation request confirmation to the CN, where the load information of the RNC2 is included, including the RNC-level load information of the RNC2, and whether the permission is allowed.
  • Step S 506 the CN sends a relocation command message to the RNC 1 to notify the UE that the handover can be started, And the RNC 1 re-allocates the UE;
  • Step S509 the RNC2 returns the relocation completion to the CN;
  • S510 the CN sends an Iu release command to the RNC1; in step S511, after the RNC1 completes the release, the Iu release is completed to the CN;
  • Step S512 the UE continues the call normally through the RNC2.
  • step S513 the handover is completed, and the RNC1 and the RNC2 obtain the load information of the other party, including the RNC-level load information, and whether the resource sharing and/or the return load is allowed.
  • the RNC passes through the core network and exchanges load information in the relocation request message or the relocation request confirmation message.
  • the method is simple, and no new signaling is added, so that reliable data is provided for load sharing.
  • Embodiment 5 This embodiment provides a method for load sharing between network nodes. The method may be performed based on the foregoing Embodiment 2-4.
  • This implementation uses load balancing among RNCs in the UMTS system as an example. Referring to FIG. 6, the method is as follows.
  • the method for load sharing includes the following steps: Step S602: The RNC detects the overload of the load; in step S604, the RNC selects a lighter RNC for load sharing according to the stored load status of the neighboring RNC, for example, selecting a load smaller than the pre-load The RNC that sets the threshold performs load sharing; in step S606, the RNC determines whether the selected RNC supports resource sharing according to the stored load information of the neighboring RNC; if not, returns to step S604 to continue to reselect the RNC that can perform load sharing; Supporting, step S608 is performed; step S608, initiating a load sharing process to the selected RNC.
  • the RNC of the present embodiment When the RNC of the present embodiment performs load sharing, it considers whether the adjacent nodes allow resource sharing, and solves the problem that the load sharing fails due to the failure to know whether the adjacent nodes provide resource sharing, thereby achieving the effect of reasonably achieving load balancing.
  • Embodiment 6 This embodiment provides a network device. Referring to FIG. 7, the network device includes: a saving module 72, configured to receive and save load information of neighboring nodes, where the load information includes whether neighboring nodes allow resource sharing.
  • the above received load information can be carried in one of the following messages: Public measurement report message, A load information message, a relocation request message, or a relocation request confirmation message.
  • the load sharing module 74 is connected to the saving module 72.
  • the load information further includes: load information of the network element level; the load sharing module 74 includes: a first selecting unit, configured to select a neighboring node that supports resource sharing; and a first load sharing unit, configured to perform, according to the network element level
  • the load information is selected from the neighboring nodes that support the resource sharing selected by the first selection unit, and the adjacent nodes whose load is less than the threshold value are selected for load sharing.
  • the load information further includes: load information of whether the adjacent node is allowed to be moved back;
  • the load sharing module 74 includes: a second selecting unit, configured to select a neighboring node that supports resource sharing; and a second load sharing unit, connected to the second And a selecting unit, configured to select, from the neighboring nodes that support the resource sharing selected by the second selecting unit, load sharing according to whether the load information of the backing is allowed to be performed.
  • the network node in this embodiment may be the RNC in the foregoing embodiment, or may be the eNodeB in the foregoing embodiment.
  • Embodiment 7 This embodiment provides a system for load sharing between network nodes.
  • the system includes a plurality of adjacent nodes of the network node 82 and the network node 82.
  • multiple adjacent nodes are respectively The adjacent node 84, the adjacent node 86, and the adjacent node 88 are described as an example.
  • the neighboring node 84, the neighboring node 86, or the neighboring node 88 is configured to send load information to the network node 82, where the load information includes whether the neighboring node allows resource sharing; the network node 82 includes: a saving module, configured to: The load information is received and saved.
  • the load sharing module is configured to select a neighboring node that supports resource sharing according to the saved information to perform load sharing according to the saved information.
  • the load information sent by the neighboring nodes is usually in units of cells.
  • the load information provided by the neighboring nodes further includes: load information at the network element level, that is, Transmission resources, processor load conditions, etc. may be in units of RNC.
  • the neighboring nodes that support resource sharing may be selected first; the load information at the network element level (for example, considering the load information of the network element level and the load information of the cell level) from the selected supporting resources.
  • the neighboring nodes whose load is less than the threshold are selected among the shared neighboring nodes for load sharing.
  • the load information may further include: load information of whether the adjacent node is allowed to be moved back; at this time, when the load sharing module performs load sharing, the neighboring node that supports resource sharing may be selected first; The neighboring nodes that support resource sharing select the neighboring nodes that allow the backhaul to perform load sharing.
  • the foregoing load information may include: whether the neighboring node allows resource sharing, load information at the network element level, load information of whether the adjacent node is allowed to be moved back, and load information in the related art.
  • the network node can comprehensively consider this information for load sharing, so as to achieve better load balancing.
  • the network node 82 and the aforementioned neighboring nodes are both radio network controllers or evolved Node Bs.
  • the present invention achieves the following technical effects:
  • the network node in the above embodiment performs load sharing, it is resolved whether the neighboring node provides resource sharing by considering whether neighboring nodes allow resource sharing. Blindly initiates the problem of user migration causing failure, and thus achieves the effect of reasonable load balancing.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé, un système et un dispositif de réseau pour équilibrage de charge entre les nœuds de réseau, dans le domaine des communications. Le procédé comprend les opérations suivantes : un nœud de réseau reçoit et sauvegarde les informations de charge de nœuds voisins (S202), les informations de charge comprenant le fait que les nœuds voisins permettent ou non un partage de ressources ; lorsque le nœud de réseau est surchargé, le nœud voisin qui accepte un partage de ressources pour équilibrage de charge est sélectionné conformément aux informations sauvegardées (S204). Par le procédé, le problème selon lequel un déclenchement aveugle d'un transfert d'utilisateur se traduit par un échec en raison de l'absence d'apprentissage du fait que les nœuds voisins permettent ou non un partage de ressources est résolu, ce qui permet en outre d'atteindre l'effet de mise en œuvre rationnelle d'un équilibrage de charge.
PCT/CN2010/073448 2010-06-02 2010-06-02 Procédé, système et dispositif de réseau pour équilibrage de charge entre nœuds de réseau WO2011150555A1 (fr)

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PCT/CN2010/073448 WO2011150555A1 (fr) 2010-06-02 2010-06-02 Procédé, système et dispositif de réseau pour équilibrage de charge entre nœuds de réseau

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PCT/CN2010/073448 WO2011150555A1 (fr) 2010-06-02 2010-06-02 Procédé, système et dispositif de réseau pour équilibrage de charge entre nœuds de réseau

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1856134A (zh) * 2005-04-18 2006-11-01 华为技术有限公司 一种实现核心网络节点负载分担的方法
CN101111078A (zh) * 2007-08-21 2008-01-23 华为技术有限公司 池区中实现负荷均衡的方法及核心网节点
CN101370162A (zh) * 2007-08-15 2009-02-18 华为技术有限公司 负载信息获得方法、装置及系统
CN101541041A (zh) * 2009-04-23 2009-09-23 华为技术有限公司 负载分担方法、装置及系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1856134A (zh) * 2005-04-18 2006-11-01 华为技术有限公司 一种实现核心网络节点负载分担的方法
CN101370162A (zh) * 2007-08-15 2009-02-18 华为技术有限公司 负载信息获得方法、装置及系统
CN101111078A (zh) * 2007-08-21 2008-01-23 华为技术有限公司 池区中实现负荷均衡的方法及核心网节点
CN101541041A (zh) * 2009-04-23 2009-09-23 华为技术有限公司 负载分担方法、装置及系统

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